>No argument against more onerous checking is undermined or rendered less severe due to an age field already existing

From your point of view.

What I can tell you is that there are definitely people who will argue that this is, by the fact of being written into law, now the spirit of the law.

Then these people will argue that the spirit of the law is being broken, and the implementation needs to be better and tighter. Not that it needs to be repealed! Because clearly this is something that was wanted. And to many, many people, this will be sufficient argument not to complain about further measures.